Binder additives for composite materials

Abstract

Compositions containing at least one binder and at least one surface-active additive in processes for the production of composite mouldings, and the use thereof.

1 . Composite moulding produced using a composition containing at least one binder and at least one surface-active additive. 
     
     
         2 . Composite moulding according to  claim 1 , characterized in that the surface-active additive is an organic, preferably an organometallic and/or an organosilicon compound. 
     
     
         3 . Composite moulding according to  claim 2 , characterized in that it consists of cellulose-, glass-, mineral-, polymer- and/or metal-containing materials. 
     
     
         4 . Composite moulding according to  claim 2 , characterized in that the surface-active additive is a compound of the general formula (I) 
       
         
           
           
               
               
           
         
         in which 
         a, independently of one another, is 0 to 500, 
         b, independently of one another, is 0 to 60, 
         c, independently of one another, is 0 to 10, 
         d, independently of one another, is 0 to 10, 
         with the proviso that, per molecule of the formula (I), the average number Σd of the T units and the average number Σc of the Q units per molecule are in each case not more than 50, the average number Σa of the D units per molecule is not more than 2000 and the average number Σb of the silyloxy units carrying R4 per molecule is not more than 100, 
         R, independently of one another, is at least one radical from the group consisting of linear, cyclic or branched, aliphatic or aromatic, saturated or unsaturated hydrocarbon radicals having 1 to 20 C atoms, 
         R5, independently of one another, is R4 or R, 
         R4, independently of one another, is an organic radical which is not R, or a fragment selected from the group consisting of
   —CH 2 —CH 2 —CH 2 —O—(CH 2 —CH 2 O—) x —(CH 2 —CH(R 1 )O—) y —R 2  
 
   —CH 2 —CH 2 —O—(CH 2 —CH 2 O—) x —(CH 2 —CH(R 1 )O—) y —R 2  
 
   —CH 2 —R 3  
 
   —CH 2 —CH 2 —(O) x′ —R 3  
 
   —CH 2 —CH 2 —CH 2 —O—CH 2 —CH(OH)—CH 2 OH
 
                     —CH 2 —CH 2 —CH 2 —O—CH 2 —C(CH 2 OH) 2 —CH 2 —CH 3 , in which
 
 
         x is 0 to 100, 
         x′ is 0 or 1, 
         y is 0 to 100, 
         R 1 , independently of one another, is a substituted or unsubstituted alkyl or aryl group having 1 to 12 C atoms, it being possible for substituents R 1  differing from one another to be present within a radical R4 and/or a molecule of the formula I, and 
         R 2 , independently of one another, denotes a hydrogen radical or an alkyl group having 1 to 4 C atoms, a group —C(O)—R′ where R′=alkyl radical, a group —CH 2 —O—R 1 , an alkylaryl group or the group —C(O)NH—R 1 , 
         R 3  is a linear, cyclic or branched or substituted hydrocarbon radical having 1 to 50 C atoms, 
         R7, independently of one another, may be R, R4 and/or a functionalized, organic, saturated or unsaturated radical substituted by hetero atoms and selected from the group consisting of the alkyl, aryl, chloroalkyl, chloroaryl, fluoroalkyl, cyanoalkyl, acryloyloxyaryl, acryloyloxyalkyl, methacryloyloxyalkyl, methacryloyloxypropyl or vinyl radicals. 
       
     
     
         5 . Composite moulding according to  claim 1 , produced using 99 to 0.1% by weight of at least one cellulose-containing material. 
     
     
         6 . Composite moulding according to  claim 1 , produced using 1 to 50% by weight of at least one binder. 
     
     
         7 . Composite moulding according to  claim 1 , produced using 70 to 0.01% by weight of at least one surface-active additive, based on the amount of binder. 
     
     
         8 . Composite moulding according to  claim 1 , produced using further additives, surfactants, solvents and/or emulsifiers. 
     
     
         9 . Process for the production of a composite moulding according to  claim 1  by continuous or batchwise pressing of binder-coated materials. 
     
     
         10 . Process according to  claim 9 , characterized in that the pressing temperature is 0-400° C. at a pressure of 0 to 100 bar. 
     
     
         11 . Process according to  claim 9 , characterized in that polyisocyanates, urea/formaldehyde, phenol/formaldehyde and/or melamine/formaldehyde resins, alone or as mixtures with one another, are used as binders. 
     
     
         12 . Process according to  claim 9 , characterized in that the surface-active additive is introduced into the binder and the mixture is then applied to the material. 
     
     
         13 . Method for the production of articles of all kinds, in particular boards, blocks, beams or strands using the composite moulding according to  claim 1 . 
     
     
         14 . Method for the production of pieces of furniture and furniture parts, of packaging materials, in house construction and interior finishing using the articles according to  claim 13 . 
     
     
         15 . Composition containing an organic binder and at least one surface-active substance for use in one of the processes according to  claim 9 . 
     
     
         16 . Composition according to  claim 15 , characterized in that the surface-active substance is a siloxane of the formula (I). 
     
     
         17 . Composite moulding in the form of a chip board, OSB board, fibre board, plywood board and/or cork board, produced by a process according to  claim 9 . 
     
     
         18 . Composite moulding according to  claim 5 , produced using 1 to 50% by weight of at least one binder. 
     
     
         19 . Composite moulding according to  claim 18 , produced using 70 to 0.01% by weight of at least one surface-active additive, based on the amount of binder.